Hello sure i believe that i need to create an english version of the tutorial it also has a lot of legacy code this will work only for Android since iOS doesn't support Bluetooth 2.0 to make it work for both platform you will need to use Bluetooth LE

Hello, Thank you for this great example..I'm trying to read the data and trigger some action from a specific byte received? can you help me to figure it out? (i.e. Change Image view... if byte received == "A")

for this example purposes the serial communication is mandatory, ill get an Arduino to create a new english and updated version of this example for both Bluetooth 2.0 and Bluetooth LE for iOS, Android and Xamarin.Forms

Xamarin.Forms: Custom Context Actions on iOS
Hello folks now is time to talk about customize context action views on Xamarin.Forms cell for iOS (yes the red/light-gray options that appear when you swipe a cell) the default colors are not a good-looking, so right now is a little bit tricky to achieve that but we will use a reflection technique to achieve the next two escenarios: Change background color for default and destructive context actionSet custom view for default and destructive context action
first at all, lets take a look to native impl. on Xamarin.Forms Github project on the next url https://github.com/xamarin/Xamarin.Forms/blob/ae92582d5acad2b8aeab9a2ed5b490561e71bd6c/Xamarin.Forms.Platform.iOS/ContextActionCell.cs#L14

Here we have two key items "DestructiveBackground" and "NormalBackground" both are the Images that Xamarin.Forms use to put as background on the default ContextActions view(Gray/Red)